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Mechanical seal life

The life of a mechanical seal depends on the cleanliness of the pumped fluid. Due to the diversity of op-
erating conditions, it is not possible to give definite indications as to the life of a mechanical seal.

6.1.4.2 Packed stuffing-box maintenance

WARNING:

•

Failure to disconnect and lock out driver power may result in serious physical injury. Nev-
er attempt to replace the packing until the driver is properly locked out.

Adjustment of gland

Adjust the gland if the leakage rate is greater than or less than the specified rate.

Evenly adjust each of the two gland bolts with a one-quarter (1/4) turn until the desired leakage rate is
obtained. Tighten the bolts to decrease the rate. Loosen the bolts to increase the rate.

Tightening of packing

NOTICE:

Never over-tighten packing to the point where less than one drop per second is observed.
Over-tightening can cause excessive wear and power consumption during operation.

If you cannot tighten the packing to obtain less than the specified leakage rate, then replace the packing.

6.1.5 Packed Stuffing Box

If the axial flow pump has a standard stuffing box to seal the rotating shaft the packing rings were instal-
led at the factory, but at some point during the life of the pump they must be replaced. The following
steps are used to replace the standard packing:

1.

Drain the system or isolate the pumpage from the pump before replacing the packing.

2.

Remove the nuts from the gland studs that hold the gland in place.

3.

Use a packing puller remove the first (2) rows of packing from the box.

4.

Use threaded rods or a packing puller to remove the lantern ring from the box.

5.

Use a packing puller remove the second (2) rings of packing from the box.

6.

Use threaded rods or a packing puller to remove the second lantern ring from the box.

7.

Use a packing puller remove the final ring of packing from the bottom of the box.

8.

Clean the stuffing box of any grit or build-up. Clean the shaft sleeve prior to replacing the packing. If
the sleeve is damaged now is the time to replace it.

9.

Install the packing and lantern ring in the reverse order of removal, 1 ring of packing, lantern ring, 2
rings of packing, lantern ring, 2 rings of packing, and the gland. Firmly seat each ring. Stagger joints
in each ring 90°. Make sure center of lantern ring lines up with flush tap in the stuffing box.

10. Die formed packing rings are used when re-packing a box. Care must be used during their installa-

tion. To install packing, twist the ring sideways just enough to get it around the shaft. Do not attempt
to pull rings straight out, see Figure:

Packing rings

.

6.1 Maintenance

Model AF (42"/1200mm/54"/60"/66") LM/LMR Bearings Installation, Operation, and Maintenance Manual

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Содержание Goulds Pumps AF 1200 LM

Страница 1: ...Installation Operation and Maintenance Manual Model AF 42 1200mm 54 60 66 LM LMR Bearings ...

Страница 2: ......

Страница 3: ...uirements 11 2 4 Uncrating De Skidding 11 3 Product Description 12 3 1 General 12 3 1 1 Pump Description 12 3 2 Nameplate information 13 4 Installation 16 4 1 Preinstallation 16 4 1 1 Foundation Requirements 16 4 1 2 Sub base Leveling 17 4 1 3 Spring Mounted Base 19 4 1 4 Remove Spring from Spring Pocket 22 4 2 Connection of Piping 23 4 3 Pipe Hung Installation 25 4 4 Drive Alignment Procedures 26...

Страница 4: ...5 8 1 1 Recommended Spare Parts 65 8 2 AF Parts List 42 54 inch Pumps 65 8 2 1 42 54 Top Suction AF with LMR Bearings 66 8 2 2 42 54 End Suction AF with LM Bearings 66 8 2 3 42 54 AF with LMR Bearings Mechanical Seal and Casing Gasket Seal 67 8 2 4 42 54 with LM Bearings Special Packing Arrangement Dual Casing O Ring Seal 68 8 3 AF Parts List 60 66 inch Top Suction Pumps 69 8 3 1 60 66 Top Suction...

Страница 5: ...t provided by ITT If there is any uncertainty regarding the appropriate use of the equipment please contact an ITT representative before proceeding Risk of serious personal injury Applying heat to impellers propellers or their retaining devices can cause trapped liquid to rapidly expand and result in a violent explosion This manual clearly identifies accepted methods for disassembling units These ...

Страница 6: ...u read understand and follow the safety messages and regulations carefully before handling the product They are published to help prevent these hazards Personal accidents and health problems Damage to the product Product malfunction Hazard levels Hazard level Indication DANGER A hazardous situation which if not avoided will result in death or seri ous injury WARNING A hazardous situation which if ...

Страница 7: ...ions regulations Observe these safety regulations regarding waste and emissions Dispose appropriately of all waste Handle and dispose of the pumped fluid in compliance with applicable environmental regulations Clean up all spills in accordance with safety and environmental procedures Report all environmental emissions to the appropriate authorities Reference for electrical installation For electri...

Страница 8: ...nt is in good condition Use a lifting harness a safety line and a breathing device as required Make sure that the product is thoroughly clean Make sure that there are no poisonous gases within the work area Make sure that you have quick access to a first aid kit Disconnect and lock out power before servicing Check the explosion risk before you weld or use electric hand tools 1 7 Precautions during...

Страница 9: ...he gas and or vapor present in hazardous areas Any maintenance for Ex approved products must conform to international and national stand ards for example IEC EN 60079 17 Product and product handling requirements These are the product and product handling requirements for Ex approved products in potentially explo sive atmospheres Only use the product in accordance with the approved motor data state...

Страница 10: ...SA The drive unit degree of protection follows IP68 See the nameplate for maximum submersion according to standard IEC 60529 1 10 Product warranty Coverage ITT undertakes to remedy faults in products from ITT under these conditions The faults are due to defects in design materials or workmanship The faults are reported to an ITT representative within the warranty period The product is used only un...

Страница 11: ... damages Economic losses Warranty claim ITT products are high quality products with expected reliable operation and long life However should the need arise for a warranty claim then contact your ITT representative 1 10 Product warranty Model AF 42 1200mm 54 60 66 LM LMR Bearings Installation Operation and Maintenance Manual 9 ...

Страница 12: ... shock loads can cause property damage and or personal injury Ensure that the unit is properly supported and secure during lifting and handling CAUTION Risk of injury or equipment damage from use of inadequate lifting devices Ensure lifting devi ces such as chains straps forklifts cranes etc are rated to sufficient capacity 2 2 2 Lifting the Pump Sub Base WARNING Pump and components are heavy Fail...

Страница 13: ...ry location Store the unit free from heat dirt and vibrations Rotate the shaft by hand several times at least every three months 2 4 Uncrating De Skidding Care should be taken when uncrating or de skidding pumps If shipment is not delivered in proper order and in accordance with the bill of lading note the damage or shortage on both the receipt and freight bill Make any claims to the transportatio...

Страница 14: ...w through the suction and out the discharge end of the pump The pump accommodates top or end suction configurations using either the LMR or LM bearing arrangement The LMR is for top suction and the LM is for end suction Arrangements are as follows Table 2 Pump Description Power End Inboard Bearing Outboard Bearing LMR Spherical roller Spherical thrust spacer Spherical roll er LM Spherical roller S...

Страница 15: ...em bly with the impeller The shaft comes with a replaceable sleeve when used with stuffing boxes Bearings The inboard radial bearing absorbs shaft radial loads and aligns the pump shaft It is a spherical roller bearing The outboard thrust bearing absorbs impeller thrust loads and comes as either back to back an gular contacts or a single taper roller bearing depending on pump size Lubrication is b...

Страница 16: ...ted IMP DIA Impeller diameter in inches CONT ITEM NO Customer contract or item number MAX DIA Maximum impeller diameter in inches Nameplate on the casing using Metric units Nameplate field Explanation S N Serial number of the pump MODEL Pump model SIZE Size of the pump STD DIM Standard ANSI dimensional code HYRO PRESS Hydrostatic pressure at 38 C in kg cm2 FLOW Rated pump flow in m3 hr R P M Rated...

Страница 17: ...p is constructed IMP DIA Impeller diameter in inches CONT ITEM NO Customer contract or item number MAX DIA Maximum impeller diameter in inches 3 2 Nameplate information Model AF 42 1200mm 54 60 66 LM LMR Bearings Installation Operation and Maintenance Manual 15 ...

Страница 18: ... inspection and repair considering complete disassembly and handling of equipment The pump should have a supply of clean liquid for packing or mechanical seal lubrication The pump shall be positioned to provide the most efficient pipeline system The AF pumps covered by these instructions may be designed to hang in the piping system furnished with spring loaded sub base bolts or have a sub base des...

Страница 19: ... When the unit is received with the pump and driver mounted to the sub base it should be placed on the foundation and the coupling halves or V belts disconnected see Figure titled Sub base top view The coupling should not be reconnected until all realignment operations have been completed A recom mended coupling alignment procedure is included in the following sections 4 1 Preinstallation Model AF...

Страница 20: ... alignment will be regained by shimming under the sub base alone Provisions must be made to support the discharge piping independently from the pump to prevent excessive loads and maintain pump driver alignment 3 The sub base should be level to within 3 mm 0 125 over the length of the base and 1 5 mm 0 0875 over the width of the base Bases anchored with conventional foundation bolts use shims on b...

Страница 21: ...48 hours 8 Tighten foundation bolts Figure 7 Tighten foundation bolts 4 1 3 Spring Mounted Base The Figure V belt Driven AF pump on spring mounted sub base shows a V belt driven AF pump on a spring mounted sub base Sub bases supported by spring pockets assure that the pump remains level regardless of vertical movement due to thermal pipe expansion during operation 1 1 Spring pockets Figure 8 V bel...

Страница 22: ...w holder is a bearing surface for the end of the adjusting screw and serves to hold the end of the screw in a fixed location 1 2 3 4 5 6 7 8 9 10 1 Adjusting screw 6 Spring 2 Jam nut 7 Spring holder welded to sub base 3 Stop nut 8 Adjusting screw nut assembly 4 Spring retainer 9 Lubricate with oil 5 Bolts and nuts 10 Adjusting screw holder Figure 9 Spring pocket components The adjusting screw was ...

Страница 23: ...oad but generally do not carry equal loads Each holder has a small window to check the spring coil spacing which is an indication of the relative load on the spring The installation drawing may indicate the approximate number of turns required for each spring location especially if the unit uses more than 4 springs If necessary refer to Table Spring rate information Table 3 Spring rate information...

Страница 24: ...routed in place Some customers operate their units with the adjusting screw holders ungrouted If it becomes necessary to remove a spring assembly from a spring pocket for safety the following steps should be strictly adhered to 4 1 4 Remove Spring from Spring Pocket If it becomes necessary to remove a spring assembly from a spring pocket for safety the following steps should be strictly adhered to...

Страница 25: ... in misalignment and contact with rotat ing parts causing excess heat generation and sparks Flange loads from the piping system including those from the thermal expansion of the piping must not exceed the limits of the pump Guidelines for piping are given in the Hydraulic Institutes Standards available from Hydraulic Institute 30200 Detroit Road Cleveland OH 44145 1967 and must be reviewed prior t...

Страница 26: ...on horizontal reducers should be eccentric with the sloping side down and concentric for vertical applications 4 Pump must never be throttled on suction side 5 Separate suction lines are recommended when more than one pump is operating from the same source of supply 6 A removable spool piece of a minimum of 0 30 m 1 ft at the connection adjacent to the impeller is recommended to allow impeller ali...

Страница 27: ...ol piece NOTICE The horizontal pipe flange must be parallel with the pump flange before the bolts are tightened If the flanges are not parallel forcing them parallel by tightening the bolts may put excessive strain on the pump Installation of Pump in Pipeline 1 Connect the pump top flange to the vertical pipe and tighten flange bolts Level pump with in 005 foot 0 42 mm meter 2 Check the impeller c...

Страница 28: ...r 4 4 Drive Alignment Procedures Alignment procedures must be followed to prevent unintended contact of rotating parts Follow coupling manufacturer s installation and operation procedures WARNING Before beginning any alignment procedure make sure driver power is locked out Failure to lock out driver power will result in serious physical injury Lock out driver power to prevent electric shock accide...

Страница 29: ...ly installed V belt drives are capable of running for years AF pumps come in several different belt drive configurations i e side by side overhead underslung or Z mount Installation and alignment procedures are similar for all configurations Remove the guard or guards by referring to the assembly disassembly instructions There are a few items that should be checked during installation and alignmen...

Страница 30: ...ersonal injury to operating personnel 2 Operate the drive a few minutes to seat the belts in the sheave grooves Observe the operation of the drive under its highest load condition usually starting A Slight bowing of the slack side of the drive indicates proper tension If the slack side remains taut during the peak load the drive is too tight Excessive bowing or slippage indicates insufficient tens...

Страница 31: ...ct alignment 1 2 1 Motor End Gear box end 2 Gearbox end Pump end Figure 14 Using a dial indicator to check coupling alignment 1 Mount two dial indicators off one half of the coupling X so they contact the other coupling half Y 2 Check setting of indicators by rotating coupling half X to ensure indicators stay in contact with coupling half Y but do not bottom out Adjust indicators accordingly 3 To ...

Страница 32: ...ro indicator A at position 1 of coupling half Y Mark this position on both flanges 2 Rotate both flanges 180 to position 3 Observe needle and record reading 3 Negative Reading The coupling halves are further apart at position 3 than position 1 Positive Reading The coupling halves are closer at position 3 than position 1 Figure 15 Directions for viewing coupling view from front end of pump 4 Correc...

Страница 33: ...ng half Y Mark this position on both flanges 2 Rotate both flanges 180 to position 3 Observe needle and record reading 3 Negative Reading Coupling half Y is shifted toward position 1 If the value is greater than 0 076mm 0 003 correct the misalignment by evenly at equal amounts on both sides shimming the motor higher When using positions 2 and 4 in steps 1 2 correct any misalignment by sliding the ...

Страница 34: ... causes 1 Settling or spring of the foundation 2 Wear of bearings 3 Pipe strains distorting or shifting the machine 4 Shifting of the sub base due to heat created from an adjacent heat source 5 Shifting of the building structure due to variable loading or other causes 6 Loose nuts or bolts on the pump or driver assembly NOTICE With experience the installer will understand the interaction between a...

Страница 35: ...ment Mark each blade 1 2 3 and 4 and then align the impeller blades as shown on the impeller alignment worksheet approx 2 4 8 and 10 o clock Rotate the shaft and measure the gap between each blade and the casing at all four clock positions indi cated on the worksheet The value of interest is the largest value of feeler gauge thickness that will slide easily the whole length of the vane tip Add the...

Страница 36: ...tor should be wired and the direction of rotation checked A rotation arrow is located on the bearing housing 134C Serious damage could occur if the pump is run the wrong direction 4 6 Impeller alignment worksheet 34 Model AF 42 1200mm 54 60 66 LM LMR Bearings Installation Operation and Maintenance Manual ...

Страница 37: ...ent per drive mfgr 4 4 1 V Belt Drive Sheaves on page 27 Coupling alignment per cplg mfgr 4 4 2 Gear Drive Couplings on page 29 Piping installed and alignment rechecked 4 4 Drive Alignment Procedures on page 26 Mech seal adjusted per mfgr Mfgrs Man l Mech seal adjusted per mfgr 5 5 Final Alignment on page 44 Impeller alignment and clearance set ______ Inch Side 4 5 Impeller Alignment on page 324 6...

Страница 38: ...ade to be sure motor rotation coincides with the pump rotation direction Depending on your pump arrangement V belt or gear drive use one of the following methods to check motor rota tion Direct connect 1 Lock out power to the driver 2 Remove the pump coupling guard 3 Make sure the coupling halves are securely fastened to shafts 4 Unlock driver power 5 Make sure everyone is clear Jog the driver jus...

Страница 39: ...es are shipped without oil Oil must be added to the bearing housing before starting Table 6 Axial Flow Pump Approx Oil Volume Pump Size Quarts Liters 42 1200mm 54 74 70 5 60 66 62 59 Approximate values only Always fill using sight glass to verify level Oil level should be at the center of the sight glass See comments in this section Remove the bearing housing breather 113A and add oil until oil le...

Страница 40: ...approach of bearing failure For a given speed and loading the bearing housing temperature will stabilize at some temperature usu ally below 93 C 200 F which will be the normal temperature for the installation Higher temperatures than this normal temperature without any change in speed or loading can mean a lubrication difficulty or the approach of bearing failure Installing bearing Long bearing li...

Страница 41: ...to property locate the lantern ring with the flush port will result in insufficient packing lubrication 6 Install the second and third coil as required by sectional drawing staggering the cut 90 to 120 7 Install the second lantern ring into stuffing box carefully noting its proper position on the section al drawing 8 Install the third and fourth coil as required by sectional drawing staggering the...

Страница 42: ...ngs are of carbon and ceramic material brittle in nature and easily damaged As the sealing rings seat with the operation of the pump a compatible wear pattern develops between the mating surfaces To disassemble the mechanical seal after the wear pattern is established would necessitate the replace ment of the rotating element and stationary sealing elements Do not replace only one component To ens...

Страница 43: ...ight damage pump and seal compo nents 8 Lubricating liquid must be flowing to the stuffing box before pump is started Flush flows Prior to starting pump ensure all flush and cooling systems are operating Packing or mechanical seals are used to seal the rotating shaft Generally a clear liquid such as water is used to lubricate and cool the sealing elements The lubricating liquid pressure must be 10...

Страница 44: ...tion levels bearing temperature and excessive noise If normal levels are exceeded shut down the pump and resolve the issue 5 Make sure to operate the pump at or near the rated conditions Failure to do so can result in pump damage from cavitation or recirculation 6 Vary the capacity with the regulating valve in the discharge line Never throttle the flow from the suction side This action can result ...

Страница 45: ...the rated flow The pump and system must be free of foreign objects If pump becomes plugged shut down and unplug prior to restarting pump Listed below are some causes for circulation loss Keep in mind that operation at reduced capacities can cause damage to the pump 1 Increase in TDH against which pump operates could be caused by 1 Heat exchanger tubes partially plugged 2 Too many heat exchanger tu...

Страница 46: ...freezing conditions while pump is idle could cause liquid to freeze and damage the pump Liquid inside pump should be drained 5 4 Shut down the pump 1 Turn off power to pump motor 2 In case of necessary maintenance or pump inspection lock driver to prevent accidental rotation WARNING When handling hazardous and or toxic fluids skin and eye protection are required If pump is being drained precaution...

Страница 47: ...X classification of the equipment Failure to follow these procedures will void the ATEX classification for the equipment Inspection intervals should be shortened appropriately if the pumpage is abrasive and or corrosive or if the environment is classified as potentially explosive WARNING When handling hazardous and or toxic fluids proper personal protective equipment should be worn If pump is bein...

Страница 48: ...s Perform these tasks every three months Check that the foundation and the hold down bolts are tight Check the packing if the pump has been left idle and replace as required Change the oil every three months 2000 operating hours at minimum If any rubbing noise has been noticed re align the impeller Annual inspections Perform these inspections one time each year Check the pump capacity Check the pu...

Страница 49: ...ation and maintain fill level 6 1 3 2 Acceptable oil for lubricating bearings A good SAE 30 or 40 is usually satisfactory Consult a reputable supplier for acceptable substitutes for the oils mentioned The viscosity of the oil should be 150 SSU at the operating temperature to prevent accelerated bearing wear 66 C 150 F is the maximum temperature at which a typical 30 wt oil will sup ply the require...

Страница 50: ...can mean a lubrication difficulty or the approach of bearing failure 6 1 4 Shaft seal maintenance 6 1 4 1 Mechanical seal maintenance WARNING The mechanical seal used in an Ex classified environment must be properly certified CAUTION Running a mechanical seal dry even for a few seconds can cause seal failure and physical injury Never operate the pump without liquid supplied to the mechanical seal ...

Страница 51: ... must be replaced The following steps are used to replace the standard packing 1 Drain the system or isolate the pumpage from the pump before replacing the packing 2 Remove the nuts from the gland studs that hold the gland in place 3 Use a packing puller remove the first 2 rows of packing from the box 4 Use threaded rods or a packing puller to remove the lantern ring from the box 5 Use a packing p...

Страница 52: ...sert the lantern ring with tapped extractor holes facing outward from the box be sure it is aligned with the flush ports in the stuffing box 6 1 Maintenance 50 Model AF 42 1200mm 54 60 66 LM LMR Bearings Installation Operation and Maintenance Manual ...

Страница 53: ... not clean an external flush should be used to lubricate and cool packing An external sealing liquid is required when 1 Abrasive particles in the pumpage could score the shaft sleeve 2 Stuffing box pressure is below atmospheric pressure due to pump running when suction source is under vacuum Under these conditions packing will not be cooled and lubricated and air will be drawn into the pump If an ...

Страница 54: ...er of the coupling guard 2 Slide the driver half of the coupling guard toward the pump 1 2 Item Description 1 Driver 2 Slide to remove 3 Remove the nut bolt and washers from the driver half of the coupling guard 4 Remove the driver half of the coupling guard a Slightly spread the bottom apart b Lift upwards 5 Remove the remaining nut bolt and washers from the pump half of the coupling guard It is ...

Страница 55: ...ine Remove bolts which fasten pump to suction and discharge piping 2 If the pump is pipe mounted remove it from the piping and support it on adequate cribbing If the pump is base mounted the casing 100 and power end may be removed while the elbow 315A remains attached to the base 3 Support the casing 100 by the lifting eye on top Loosen and remove all of the bolts and nuts that secure the casing t...

Страница 56: ...l be removed from the elbow 315A 6 Remove cap screws 370H fastening thrust bearing retainer 109 to bearing housing 134 Care fully pull retainer over shaft Top suction pumps have thrust bearing 112C at the outboard location and the thrust bearing stationary race and 6 small springs 9890 may be jarred free Do not dam age oil seal 332 7 Be sure overhung portion of shaft is supported 8 Remove cap scre...

Страница 57: ...ress too tightly until after start up The packing will need to be run in and adjusted for proper flow of lubricating water If a mechanical seal is used please see the mechanical seal IOM for proper installation of seal 11 Connect seal water and cooling lines to pump Fill the oil lubrication system Be sure bearing hous ing oil is level with the center of the sight glass 6 3 2 Reassemble the Power E...

Страница 58: ... shaft 122 keyseat 2 Depending on the drive type install the hub fasteners for a coupling or sheave to the shaft 122 If you have a coupling halve that is interference fit you may need to heat it before installing on the shaft 122 Drive instructions are included with the data package Follow the manufacturer s in structions for coupling or sheave installation 400 122 Figure 20 Coupling reassembly NO...

Страница 59: ...d check the tension per the drive manufacturers instructions 1 2 1 Install belts 2 Shift slide base Figure 22 V belt installation 8 Fasten the guard base 501 to the sub base using screws 502 Install the guard cover 500 using screws 502 500 501 502 6 3 Reassembly Model AF 42 1200mm 54 60 66 LM LMR Bearings Installation Operation and Maintenance Manual 57 ...

Страница 60: ...s from around the bearing housing 134 and elbow 100 500A 500A 100 134 Figure 24 Direct drive pump to sub base reassembly 13 Align the gear box and pump coupling halves as described in sub base installation section If the motor and gear box were moved during disassembly re align they must be re aligned also 14 Wrap the coupling cover around the coupling halves and install the fasteners that hold th...

Страница 61: ...g edges of the vanes for pitting erosion or corrosion damage re place if grooved or worn deeper than 3 16 5 0 mm 3 Inspect the root vane attach point at hub of each vane for cracks Impeller vane failure can cause unbalance in the rotating assembly that will lead to catastrophic failure of the pump 4 Inspect the keyway and stepped bores for signs of pitting wear or corrosion damage 5 Check the O ri...

Страница 62: ...determine the cause If cause is not normal wear it should be corrected before the pump is returned to service NOTICE Do not re use bearings Oil Seals O Rings Gaskets Although the oil seals 332 333 O rings 351A 351B 496A 496B 496C and gaskets 360R 360X may seem OK during inspection and examination DO NOT RE USE SEALS when rebuilding the pump Replace them while pump is disassembled 6 3 Reassembly 60...

Страница 63: ... piping so the liquid level is above the pump impeller centerline Pump not primed or prime lost pump does not completely fill elbow Fill system piping completely so the impeller is submerged Suction and or discharge valve closed or clogged Open valves to remove partially blocked condition Suction piping incorrect Replace or modify suction piping Excessive air entrapped in liquid Install vent in pi...

Страница 64: ...ght glass Improper lubricant Check lubricant for suitability Not lubricated enough Increase frequency of grease lubrica tion Broken or bent impeller vanes Check impeller dimensions and vane layout Excessive shaft misalignment Check shaft run out and consult fac tory Inadequate lubricant cooling Check pumpage temperature and add oil cooling system if necessary Axial thrust or radial load higher tha...

Страница 65: ...ation levels rebalance coupling if necessary Pump operating speed too close to system s natural frequency Change speed to be 20 of the pumps natural frequency Impeller partly clogged Back flush pump or manually clean impeller Impeller clearances too tight Check impeller clearances adjust if necessary Pump assembled incorrectly Compare pump assembly to instruc tion manual Pump run off design point ...

Страница 66: ...talled correctly Compare pump sub base installation to instruction manual Bearing failing Replace if necessary Piping not properly anchored Check to see if excessive pipe strain is being transferred to pump flanges Pump and or driver not secured to sub base Check fasteners if loose check align ment and re tighten Specific gravity higher than specified Analyze pumpage and compare to specified gravi...

Страница 67: ...ing 106 Optional Bearing Lockwasher 382 Packing Gland 107 Optional Bearing Locknut 136 8 2 AF Parts List 42 54 inch Pumps Table 9 Item Part Description Item Part Description 100 CASING 353 STUD GLAND 101 PROPELLER 355 HEX NUT GLAND 105 LANTERN RING 357D NUT ELBOW TO CASING 106 PACKING PACKED BOX 358U PIPE PLUG 14 NPT 107 GLAND 358V PIPE PLUG 1 11 5 NPT 109 RETAINER THRUST BEARING 360X GASKET BRG O...

Страница 68: ...ST BEARING 496B O RING PROPELLER CAP 248 OIL WHEEL 496C O RING SHAFT 315A ELBOW 972G MALE CONNECTOR 319 SIGHT WINDOW 972H FEMALE CONNECTOR 319A SIGHT WINDOW 984A COOLING COIL 332 OIL SEAL INBOARD 9890 SPRINGS THRUST BRG 333 OIL SEAL OUTBOARD 9985 SHAFT WASHER PROPELLER LOCK PLATE 351A CASING O RING 9988 PROPELLER END COVER 351B CASING O RING 8 2 1 42 54 Top Suction AF with LMR Bearings Refer to 8 ...

Страница 69: ...arings Mechanical Seal and Casing Gasket Seal Refer to 8 2 AF Parts List 42 54 inch Pumps on page 65 8 2 AF Parts List 42 54 inch Pumps Model AF 42 1200mm 54 60 66 LM LMR Bearings Installation Operation and Maintenance Manual 67 ...

Страница 70: ...ecial Packing Arrangement Dual Casing O Ring Seal Refer to 8 2 AF Parts List 42 54 inch Pumps on page 65 8 2 AF Parts List 42 54 inch Pumps 68 Model AF 42 1200mm 54 60 66 LM LMR Bearings Installation Operation and Maintenance Manual ...

Страница 71: ...uction Pumps Item Part Description Item Part Description 100 CASING 357D HEX NUT ELBOW TO CASING 8 3 AF Parts List 60 66 inch Top Suction Pumps Model AF 42 1200mm 54 60 66 LM LMR Bearings Installation Operation and Maintenance Manual 69 ...

Страница 72: ...T CLIP 168C BEARING RADIAL INBOARD 383 MECHANICAL SEAL 178 PROPELLER KEY 400 KEY COUPLING 196 SLEEVE THRUST BEARING 408A PIPE PLUG 1 11 5 NPT 222 SET SCREW OIL WHEEL 408H PLUG PROPELLER CAP 222C SET SCREW SLEEVE KEY 415 JAM NUT SUCTION ALIGNMENT 248 OIL WHEEL 415A JAM NUT ALIGNMENT 315A ELBOW 443 SPACER BEARING 319 SIGHT WINDOW 467A HEX BUSHING BREATHER 319A SIGHT WINDOW 473 THROAT BUSHING 332 OIL...

Страница 73: ...nical Seal and Casing Gasket Seal Refer to 8 3 AF Parts List 60 66 inch Top Suction Pumps on page 69 8 3 AF Parts List 60 66 inch Top Suction Pumps Model AF 42 1200mm 54 60 66 LM LMR Bearings Installation Operation and Maintenance Manual 71 ...

Страница 74: ...BOARD 109 RETAINER THRUST BEARING 370A STUD PROPELLER END COVER 112 BEARING RADIAL OUTBOARD 370B CAP SCREW SUCTION ALIGNMENT 112C BEARING THRUST 370C CAP SCREW SHAFT WASHER 113A BREATHER 370D STUD ELBOW TO CASING 119B RETAINER RADIAL BEARING 370E CAP SCREW ALIGNMENT 122 SHAFT 370F CAP SCREW RADIAL BEARING RETAIN ER 126 SHAFT SLEEVE 370G CAP SCREW BEARING FRAME TO EL BOW 8 4 AF Parts List 60 66 inc...

Страница 75: ...NMENT 315A ELBOW 443 SPACER BEARING 319 SIGHT WINDOW 467A HEX BUSHING BREATHER 319A SIGHT WINDOW 473 THROAT BUSHING 332 OIL SEAL OUTBOARD 494 FRAME COOLER ASSEMBLY 333 OIL SEAL INBOARD 496A O RING SHAFT SLEEVE 351A CASING 0 RING 496B O RING PROPELLER END COVER 351B CASING 0 RING 496C O RING SHAFT TO PROPELLER 353 STUD GLAND 9890 SPRINGS THRUST BEARING 355 HEX NUT GLAND 9985 SHAFT WASHER PROPELLER ...

Страница 76: ...ing Arrangement Dual Casing O Ring Seal Refer to 8 4 AF Parts List 60 66 inch End Suction Pumps on page 72 8 4 AF Parts List 60 66 inch End Suction Pumps 74 Model AF 42 1200mm 54 60 66 LM LMR Bearings Installation Operation and Maintenance Manual ...

Страница 77: ...8 4 AF Parts List 60 66 inch End Suction Pumps Model AF 42 1200mm 54 60 66 LM LMR Bearings Installation Operation and Maintenance Manual 75 ...

Страница 78: ...ged as follows 3P 1L 2P 1L 1P 1RB from the gland face to the bottom of the stuffing box See High Pressure Dual Flush Packing Arrangement figure below Figure 27 High Pressure Dual Flush Packing Arrangement The inner lantern ring uses product flush to minimize product dilution This flush should be filtered to re duce particle size and minimize sleeve packing wear The outer lantern ring is supplied w...

Страница 79: ... plugged but for improved cooling of the sealing elements outlet pipes are installed to allow more flow through the stuffing box With this setup flush flows are regulated by a valve on the outlet line rather than by throttling the flow on the inlet line Figure 28 Inlet and Outlet Ports Installation 1 Be sure the stuffing box and shaft sleeve 126 are clean and free of grit 2 A PTFE restrictor bushi...

Страница 80: ...uts 90 to 120 11 After all packing and lantern rings have been properly installed insert gland into stuffing box Tighten gland nuts finger tight only The shaft should turn freely 12 Turn lubricant supply on start pump and adjust the gland as described in the operation section that follows 13 Periodic maintenance is absolutely required for all packed pumps Normal shaft run out should be under 005 t...

Страница 81: ...s Pumps Inc 240 Fall Street Seneca Falls NY 13148 USA 2020 ITT Inc The original instruction is in English All non English instructions are translations of the original instruction Form IOM AF 42 66 en US 2020 02 ...

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